Testing device for vertical cyclic compression-lateral swing shearing dynamic loading

A technology of cyclic compression and test equipment, which is applied in the direction of applying repeated force/pulsation force to test the strength of materials, and can solve the problem that cyclic shear stress cannot be applied

Inactive Publication Date: 2015-07-01
TONGJI UNIV
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  • Application Information

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Problems solved by technology

However, the above device can only apply unidirectional c

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  • Testing device for vertical cyclic compression-lateral swing shearing dynamic loading
  • Testing device for vertical cyclic compression-lateral swing shearing dynamic loading
  • Testing device for vertical cyclic compression-lateral swing shearing dynamic loading

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Embodiment

[0031] A test device for realizing vertical cyclic compression-lateral rocking shear dynamic loading, such as figure 2 As shown, it includes the peripheral frame 1, the model box 2 arranged inside the peripheral frame 1, the loading unit for loading the model box 2, and the data acquisition unit for collecting the test data of the soil sample inside the model box 2. The model box 2 is filled with For soil sample 3, the loading unit includes a vertical dynamic load actuator 4 for applying vertical dynamic load, a lateral swing dynamic actuator 5 for applying lateral swing horizontal shear dynamic load, and a control model box 2 confining pressure Statically loaded lateral pressure loaded unit. Wherein, the vertical dynamic load actuator 4 and the lateral swing dynamic actuator 5 are both electro-hydraulic servo actuators. The vertical dynamic load actuator 4 can apply a vertical cyclic dynamic load range of 0 to 100kN, the error is 1%, the maximum loading frequency is 2Hz, an...

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Abstract

The invention relates to a testing device for vertical cyclic compression-lateral swing shearing dynamic loading. The testing device comprises a peripheral frame, a model case arranged in the peripheral frame, a loading unit for loading the model case and a data acquisition unit for acquiring testing data of a soil test sample in the model case, wherein the soil test sample fills the model case; the loading unit comprises a vertical dynamic load actuator which applies a vertical dynamic load, a lateral swing dynamic load actuator which applies a lateral swing horizontal shearing dynamic load and a lateral pressure loading unit which controls a confining stationary load of the model case. Compared with the prior art, the device provided by the invention can independently apply a horizontal rotating cyclic dynamic load to realize cyclic shearing dynamic load, and can be independently loaded or coupled with the vertical cyclic dynamic load. Moreover, the device is simple in structure, easy to assemble and detach and simple and convenient to operate in the experimental process.

Description

technical field [0001] The invention relates to a foundation soil test device in the field of foundation engineering construction, in particular to a test device for realizing vertical cyclic compression-lateral swing shear dynamic loading. Background technique [0002] In recent years, with the rapid development of the economy, various infrastructure constructions have become increasingly prosperous, and at the same time, many major and complex geotechnical engineering problems have been brought about. In particular, the stability and deformation of foundation soil and subgrade soil under dynamic loads have received increasing attention, such as soil liquefaction instability caused by earthquakes, the stability of high-rise building foundations and large bridge foundations under wind loads, and embankments under wave loads. The stability problem under the traffic load, the deformation problem of the subgrade soil under the traffic load, etc. Research on these complex issue...

Claims

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Application Information

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IPC IPC(8): G01N3/36
Inventor 钱建固由子沛顾剑波林志果黄茂松
Owner TONGJI UNIV
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